McKesson Specimen Container for Pneumatic Tube Systems, 120 mL, 1 Bag of 75 General Wound Care Extra large size is for Shoe Inserts and Insoles Extra large size is for 40 – 55 inch hips * STANDOUT FEATURES OF THE DEVICE: It's convenient to have a unit with professional quality medical electrodes but it needs to be easy to use for the average person * Have no fear the Ultima OTC has an easy to read backlit LCD screen that clearly shows text and body diagram * Pause and play buttons let you start and stop treatment as needed while the front closing door protects the controls so you won't accidentally change the settings while you use the device * 1 Year Warranty * Comes with 2 AA batteries * on the included label 4 ounce specimen container comes with scale markings from 20 to 120 mL at 10 mL increments for easy measuring